Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 46 for “"smart structures"”.
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Multicomputer networks for smart structures
A crucial element of a smart structure is the computer system that processes data collected by sensors and determines an appropriate response. Multicomputers possess many capabilities that are required in computer systems for smart structures. This research examines the implementation and use of …
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Numerical study of two-dimensional smart structures
… analysis and the design of plane 2-dimensional smart structures. We applied the developed code to the study of arbitrarily shaped piezo-electromechanical (PEM) plates. This code is based on a weak formulation of their governing equations as found in [18]. The optimal parameters needed to …
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Distributed parameter active vibration control of smart structures
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1988.
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A real time embedded controller for smart structures
… of Intelligent Structure Monitoring. Research in smart structures, especially the area of vibration suppression, has warranted the investigation of advanced computing environments. Real time PC computing power has limited development of high order control algorithms. The system discussed allows …
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Dynamics and Control of Smart Structures for Space Applications
Smart materials are one of the key emerging technologies for a variety of space systems ranging in their applications from instrumentation to structural design. The underlying principle of smart materials is that they are materials that can change their properties based on an input, typically a …
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Design and Construction of Smart Structures for Technical Textiles
The smart textiles sector is becoming increasingly significant within the technical textiles industry, contributing an increasing number of products and applications using a number of different technologies. This research is concerned primarily with electrically conductive smart textiles and, for …
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Modeling and control of smart structures embedded with magnetorheological devices
Engineering structures are the essence of supporting the development of society. However, quite often do they suffer from hostile dynamic loadings or external disturbances that may affect structural health or function. Modeling and control techniques can be applied to resiliently preserve …
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Multiphysics Topology Optimization of Programmable Shape Memory Alloy-Based Smart Structures
"Smart structures can achieve lighter and simpler mechanisms than traditional apparatuses, by exploiting the stimuli-responsive properties of smart materials. However, the lack of specialized design tools has prevented the advancement of smart structures to the next level of ""mechanical …
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MR dampers in smart structures with nonlinear non-affine dynamics improvising intelligent control
… long-span bridges, deep-sea offshore structures or suspension systems demands effective tools for control and health monitoring. These infrastructure systems are usually integrated with actuation, sensing, computation resources and information networks, taking advantage of the synergy …
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Modelling-based design of anisotropic piezocomposite transducers and multi-domain analysis of smart structures
… properties. In macro-scale models of structures with piezocomposite transducers, these properties are adopted in order to avoid the complexity of the piezocomposite microstructure. In the case of smart structures the accurate modelling of the actuation and the response of the structure …
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Piezoelectric active sensor and electric impedance approach for structural dynamic measurement
… piezoelectric devices, especially in the area of smart material systems and structures, such as structural dynamic measurement analysis, structural damage detection, active structural vibration and acoustic control, etc. Presented in this thesis is a new electromechanical approach for structural …
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Thermoelastic control of adaptive composites for aerospace applications using embedded nitinol actuators
Aerospace structures have stringent pointing and shape control requirements during long-term exposure to a hostile environment with no scheduled maintenance. This makes them excellent candidates for a smart structures approach as current passive techniques prove insufficient. This study …
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An Examination of the ThermopiezoelectricEffect in Piezoelectric Actuators Via Finite Elements
The application of piezoelectric actuators in smart structures is a rapidly developing field, especially in aerospace environments. Since thermal effects play an important role in aerospace environments, thermopiezoelectricity has been studied as it takes into account the thermal field in addition …
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Finite Element Analysis and Genetic Algorithm Optimization Design for the Actuator Placement on a Large Adaptive Structure
… needs in the area of adaptive /intelligent/smart structures, the development and application of finite element analysis and genetic algorithms for optimal design of large-scale adaptive structures. We first review some basic concepts in finite element method and genetic algorithms, along …
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Structural Monitoring With Fiber Bragg Grating Strain Sensor Array and Optical Frequency Domain Reflectometry
In this work, concepts of smart structures, health monitoring systems, and Infrastructure Optics are discussed. This accumulates in the development of the Optical and Structural Simulation software that integrates all key components of Infrastructure Optics. Recent developments in the use of …
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Simulation and Experimental Testing of Additively Manufactured Strain Gauges
… applications of sensing technology into smart structures that have vast potential in multiple industries. Previous research has demonstrated that additive manufacturing can be utilized to produce robust sensors that have highly linear responses; however, additional work is needed to …
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Magneto-rheological fluid orthosis for suppressing tremor
… tremor. This thesis is based on the concept of "smart structures" which are made of Magneto-Rheological (MR) fluid that can dynamically alter its viscosity under magnetic field. The wearable tremor suppressing orthosis needs several conditions. It should be safe, light weight, simple and small in …
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Multiplexing of interferometric fiber optic sensors for smart structure applications using spread spectrum techniques
The developing field of smart structures and skins provides an application to which fiber optic sensors bring unique capabilities and benefits. The primary cost in a network of fiber sensors is in the sources, receivers and associated hardware and can be prohibitive for a large number of sensors. …
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